Combined aluminum and wood frame for windows and doors

Details Combined aluminum and wood frame for windows and doors Combined aluminum and wood frame for windows and doors

1991-04-22

1991-12-17

Kannan, Philip C.

Movable or removable closures

Frame with closure feature

49DIG1, 52211, E06B 104

Patent

active

050725475

ABSTRACT:
A frame for a window or door is formed of inner and outer frame sections that are connected together by a thermobreak strip. The outer frame section is formed of extruded aluminum strips. The inner frame section is formed of an exterior part made of extruded aluminum strips and an interior part which is formed of wood strips. The two parts are mechanically fastened together. The inner and outer frames are roughly of the same thickness so that the thermobreak is roughly centered within the frame wherein about three-quarters of the thickness of the frame members are formed of metal, with the thermobreak arranged therein and the interior, roughly one-quarter of the frame thickness, is formed of wood. Thus, the combined aluminum and wood frame, with the thermobreak provides a structurally stable and rigid frame with an attractive appearing wood interior.

REFERENCES:
patent: 3402510 (1968-09-01), Johnson
patent: 4151682 (1979-05-01), Schmidt
patent: 4207707 (1980-06-01), Holdiman et al.
patent: 4324072 (1982-04-01), Sterner, Jr.
patent: 4558536 (1985-12-01), Dunsmoor
patent: 4982530 (1991-01-01), Palmer

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